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3-Year Home Improvement Extended Protection Plan

Fully transferable with gifts. Cancel anytime, full refund in the first 30 days

If you purchase this service plan and eligible product for this service plan, you acknowledge that Amazon may send the service plan seller relevant product and price information for the purpose of administering the plan

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From the manufacturer

Pure Indoor Living.

A pioneer in its field, the Bionaire brand believes that if there's a better way out there, we will be the first to find it by imaginatively blending technology and nature, art and science. The Bionaire brand relentlessly pursues pure perfection for all those who demand pure quality, pure design and pure simplicity in their home environment in the ultimate quest for pure indoor living.

Bionaire Twin Reversible Airflow Window Fan

with Remote Control

With a remote control for convenient adjustment, this double window fan draws in fresh, cool air from the outside or exhausts stale, hot air from inside. It can also do both simultaneously, because each of the two fans can be set independently to draw in or exhaust out, allowing the unit to exchange inside and outside air. Operable either manually or automatically, with its programmable thermostat turning the fans off and on to maintain a selected temperature--the unit has three speeds, electronic controls, and an LCD screen showing the selected temperature and the room temperature. The twin fan is designed to fit double-hung, vertical-slider, and casement windows. Overall, the unit is 13 inches high, arrives fully assembled, and carries a five-year warranty against defects.

Programmable Digital LED Thermostat

Set your desired temperature level to the degree from 60-80 degrees and the fan will automatically turn off and on in response to the ambient room temperature. Also visible in the dark for nighttime use.

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Yes, exact same problem on two fans. Had first one die first week, then a second one after a couple months. If you reverse the direction, the fans turn off for a few seconds, then reverse. If you adjust the speed without waiting for the fans to kick back on, something goes haywire, and it fries the fuse immediately. If… see more Yes, exact same problem on two fans. Had first one die first week, then a second one after a couple months. If you reverse the direction, the fans turn off for a few seconds, then reverse. If you adjust the speed without waiting for the fans to kick back on, something goes haywire, and it fries the fuse immediately. If you replace the fuse, the fan continues to run, won't turn off or respond to controls, and the fuse blows again. Their warranty service cannot replace the fan, because "They don't have stock"... "Call back in 4 months". If you have one of these fans, give the fan time between changing direction and changing speed. Both fans died in exactly the same way. The fan is great until it fries. see less Yes, exact same problem on two fans. Had first one die first week, then a second one after a couple months. If you reverse the direction, the fans turn off for a few seconds, then reverse. If you adjust the speed without waiting for the fans to kick back on, something goes haywire, and it fries the fuse immediately. If you replace the fuse, the fan continues to run, won't turn off or respond to controls, and the fuse blows again. Their warranty service cannot replace the fan, because "They don't have stock"... "Call back in 4 months". If you have one of these fans, give the fan time between changing direction and changing speed. Both fans died in exactly the same way. The fan is great until it fries. By Julia A.… on April 13, 2015

Yes, it's designed for either horizontal or vertical use. We use it vertically (without the adjustable side panels). Fits snugly in the window and it works great! Very quiet fan too. By Lynn B. on May 24, 2014

With the pleated section and expansion panel removed, the fan measures 24" wide. You will need to get past the 23" wide inner dimension of your window. Perhaps you can angle it in one side first then square it up, but I doubt it since your depth is so shallow. If you are desperate to get a fan to fit, you could cut awa… see more With the pleated section and expansion panel removed, the fan measures 24" wide. You will need to get past the 23" wide inner dimension of your window. Perhaps you can angle it in one side first then square it up, but I doubt it since your depth is so shallow. If you are desperate to get a fan to fit, you could cut away 1/2" of the main housing on each side with a hacksaw. I hope this helps. see less With the pleated section and expansion panel removed, the fan measures 24" wide. You will need to get past the 23" wide inner dimension of your window. Perhaps you can angle it in one side first then square it up, but I doubt it since your depth is so shallow. If you are desperate to get a fan to fit, you could cut away 1/2" of the main housing on each side with a hacksaw. I hope this helps. By Mark seven tenn on May 10, 2014

A really good review of a product, especially one that involves moving parts for example, should be done months, even a couple of years after the product has been used, abused and hopefully loved and cared for as well. I bought this product 3 years ago. It works great. It runs everyday of the year, many days all 24 hours. I take it apart completely every 6 to 8 months and clean and lube it. It comes apart quit easily. I would recommend this fan to anyone. Next month I'm buying another one.
I think everyone who buys products here should write their reviews months after having tried the product and put a product through it's paces. It only makes sense to get a complete review of a product by having used the product.

I bought 2 of these, one for pulling air in and one for pushing air out of the other side of the house. I couldn't be more pleased with the options on these fans. I was considering installing a whole house fan to cool down the house at night but opted for the easier route. In Colorado the sun is very hot during the day and it cools down nicely at night but it was hard to pull the warm air out by just opening the windows. Last night I had the temp down to 54 degrees in the house using the fans. I close up the house when the sun pops up and it stays cool enough I don't have to turn on the a/c at all even when it gets pretty hot out. If I do need the a/c it is only for a couple hours in late afternoon which is a big difference before the fans came. I guess the fans will pay for themselves after this season. having the option to reverse air flow saves from taking them out and turning them around. Also there is a feature that will exchange the air by one fan blowing out and the other one bringing in air, a nice feature. You can set a thermostat so the fans will turn on and turn off by themselves when the air temp reaches a pre set temperature or you can manually turn them on and off. 3 speeds also are nice. Each fan came with 2 filler panels and one built in slide out panel to fill the space in the window. I got lucky and used the extra panel from one window for the other because one window was really wide. Next year I might consider one more fan for another bedroom.

This unsolicited, uncompensated review is for the BIONAIRE Twin Window Fan, Model BW2300.
My wife and I don’t tolerate hot weather very well--we like cool fresh air circulating around the house all year long. Consequently, our home is centrally air-conditioned and we have a couple of air purifiers and several fans running most of the year. Even though we live in the Front Range of the Colorado Rockies, where the humidity is generally pretty low (often in the single digits), the hot dry air of summer can become uncomfortable for us. The outside air cools down after sunset and we normally run a table fan in our bedroom which is located on the far wall from the window. We thought it would be great to have a fan in the bedroom window to draw in the cooler nighttime air after the air conditioning shuts down for the night (we have the A/C thermostat set accordingly). Instead of having to re-locate the table fan to the window every evening, we decided to look for a window fan that suits our needs, and of course we turned to amazon. The BIONAIRE Twin Window Fan appeared to be our solution.
There were two things we had to consider before purchasing this fan: (1) we have sliding windows and narrow venetian blinds. (2) Our two cats like to perch on the desk and look out the window. (Isn’t that what most indoor cats like to do?) We didn’t want to take this small luxury away from them and we wanted to retain the use and control of the window and blinds and still have a fan in the window*.
The Fan arrived within two business days for Prime members as promised by amazon. The fan was triple-boxed (!) and arrived in perfect condition. The quality of the unit was evident right away after removing the styrofoam packing material. I temporarily placed the fan in our bedroom window and slid the window to support the fan just long enough to plug it in and do a run through after reading the owner’s manual.
FIRST IMPRESSIONS: The fans move an unexpectedly large volume of air for their size. The fans are well-balanced and there is absolutely no vibration. In addition, this unit runs whisper-quiet at the two slower speeds and only slightly louder at the highest speed. There is a section in the description at amazon stating that each of the two fans can be set independently. This led me to believe that each fan had its own power, speed, and direction controls. This is not the case, but this should not be a concern as I don’t believe most users would need such an option. The “air flow” button has 3 options whose settings are indicated by LED indicator lamps: “in” (both fan blades spinning counter-clockwise); “out” (blades spinning clockwise); and “exchange”, one fan for in, the other for out. One reviewer commented that the labeling on the control panel could be better. Indeed, the unit has white lettering on a silver background, making it difficult to read. Black lettering would have been better. The included remote control is a plus, great for being able to change settings while laying in bed.
OPERATION: The Power button cycles through “Off”, “Low”, “Medium, High”, and back to “Off”. I would have preferred separate On/Off and Airspeed buttons, but OK. There is a brief pause between these settings where the fans are not turning. This may be the manufacturer’s way of addressing problems of some users’ complaints that the unit shut down, possibly to a tripped fuse or circuit breaker within the unit. The “air flow” button exhibits the same kind of pause, probably to give the blades a chance to slow down before reversing direction. We are not using the thermostat function as we simply turn the fan on and let it run all night. This fan has a bright red LED which displays the temperature. For most of the day it seems to register the same temperature as a wall-mounted thermometer on the other side of the room. My wife and I have now become room temperature conscious and find ourselves gazing at the temperature readings. We have seen a low of 66 degrees in the early morning (not bad for mid-July), to a high of 80 degrees in late afternoon when the air conditioning is off.
* NON-STANDARD INSTALLATION: To accommodate our cats and have the use of our bedroom window and blinds, I constructed a custom-made stand from heavyweight redwood 2 by 4s, and it sits firmly on our desk. (see photo). I set a couple of wood strips at an angle to form a pair of channels for the edges of the fan to sit in. We now have cool outside air coming in at night and don’t have to run our air conditioning. And, the cats can still look out the window.
My wife and I agree that buying this product was a good investment, and we are very happy with our purchase.